<template>
  <view  class="goods-detail-container"  v-if="goods_info.goods_name">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item, i) in goods_info.pics" :key="i" @click="preview(i)">
        <image :src="item.pics_big"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
          <!-- 商品名字区域 -->
          <view class="goods-name">{{goods_info.goods_name}}</view>
          <!-- 收藏区域 -->
          <view class="favi">
            <uni-icons type="star" size="18" color="gray"></uni-icons>
            <text>收藏</text>
          </view>
      </view>
      <!-- 商品运费区域 -->
      <view class="freight">快递：免运费</view>
    </view>
    
    <!-- 商品详情区域 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 商品详情对象
        goods_info: {},
        options: [{
        			icon: 'shop',
        			text: '店铺',
        			infoBackgroundColor:'#ff0000',
        			infoColor:"#fff"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 2
        		}],
        	    buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      };
    },
    onLoad(options) {
      // 获取商品 ID
      const goods_id = options.goods_id
      
      // 调用方法 传入id
      this.getGoodsList(goods_id)
    },
    methods: {
      
      async getGoodsList(goods_id) {
        const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', {goods_id})
        
        // 请求失败 提示请求失败
        if(res.meta.status !== 200) return uni.$showMsg()
        
        // 请求成功 赋值给 goods_info 对象
        
        // 使用字符串的 replace() 正则方法，为 img 标签添加行内样式的 style 样式，从而解决图片底部空白间隙的问题
         res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, ' <img sttyle="display:block;" ').replace(/webp/g, 'jpg')
        
        this.goods_info = res.message
      },
      
      // 实现轮播图预览效果
      preview(i) {
        // 调用 uni.previewImage() 方法预览图片
        uni.previewImage({
          // 预览时默认显示图片的索引
          current: i,
          
          // 所有图片 url 地址的数组
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      
      // 左侧按钮的点击事件处理函数
      onClick(e) {
        // 判断点击事件，执行相对应的功能
        if(e.content.text === '购物车') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .goods-detail-container {
    padding-bottom: 50px;
     swiper {
    height: 750rpx;
    
    image {
      width: 100%;
      height: 100%;
    }
  }
  
  .goods-info-box {
    padding: 10px;
    padding-right: 0;
    
    .price {
      color: #C00000;
      font-size: 18px;
      margin: 10px 0;
    }
    
    .goods-info-body {
      display: flex;
      justify-content: space-between;
      
      .goods-name {
        font-size: 13px;
        padding-right: 10px;
      }
      
      // 收藏区域
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
      
    }
    
    .freight {
      font-size: 12px;
      color: gray;
      margin: 10px 0;
    }
    
  }
  
    .goods_nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
    }
  }
 
</style>
